I have a Bosch diswasher that is stuck on rinse/dry cycle.The last few times it ran it would take longer and longer to finish running. Now it won't get off the rinse/ dry cycle. I have tried turning the power switch off and on.still the same.

I have the same Bosch washer model as JDDrake-SHU4302UC and have the same problem. It gets stuck in the rinse cycle or, at times, in the wash cycle. I have reset it numerous times but to no avail. Today, after the soap tipped in, the wash cycle went on for an hour and 45 minutes. Then, it finally drained, switched to the rinse cycle, filled and 60 minutes later it was still rinsing. It is set for regular cyle which, according to the manual, should take approxiamately 92 minutes total. When the dishwasher was working properly, it took about 85 to 90 minutes which concurs with the manual.

Additionally, very sporadically, it will leak water all over the floor... Dishwasher has stopped, water pumped out, dishes unloaded and then 2 to 3 hours later there is water all over the floor.

My bosch would run forever too. Still white blech on the dishes often. I've gone to canceling the cycle after an hour or so and then running rinse and hold and hoping that they were already washed and now they are rinsed.
Now being a clueless gal, what electrical connection were you talking about here? The under sink I guess wall/cord, the switch on the wall, or is there something inside (where? underneath?) that I should check. Also, 'not a repairman' said I needed to use liquid instead of powder, comments?